INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of M 3.8 on date 04-01-1985 and time 17:57:40 (Italy) in region Confine Italia Svizzera (SVIZZERA)

A magnitude M 3.8 earthquake occured in region: Confine Italia Svizzera (SVIZZERA), on

  • 04-01-1985 16:57:40 (UTC)
  • 04-01-1985 17:57:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.16, 7.17 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 M 3.8 1985-01-04
16:57:40
46.16 7.17 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 39
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-01-04 16:57:40 ± 0.148
Latitude 46.16 ± 0.02
Longitude 7.17 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 39

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 2215.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.014
Epicentral distance of station farthest from the epicenter (degree) 0.05294
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitude information

M:3.8

Field Value
Value 3.8
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 39
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:42:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.GRR.Z. 1985-01-04T16:59:07.30 10.0 undecidable manual PN 296 0.0529 0.23 0.9
--.FLN.Z. 1985-01-04T16:59:06.40 10.0 undecidable manual PN 301 0.052 0.61 0.6
--.MFF.Z. 1985-01-04T16:58:56.20 10.0 undecidable manual PN 279 0.0456 0.38 0.9
--.LFF.Z. 1985-01-04T16:58:50.10 10.0 undecidable manual PN 258 0.0419 -0.27 1.1
--.LPO.Z. 1985-01-04T16:58:46.80 10.0 undecidable manual PN 254 0.04 -0.59 0.8
--.RJF.Z. 1985-01-04T16:58:41.40 10.0 undecidable manual PN 261 0.0363 -0.32 1.1
--.LSF.Z. 1985-01-04T16:58:39.80 10.0 undecidable manual PN 275 0.0351 -0.09 1.3
--.CAF.Z. 1985-01-04T16:58:37.30 10.0 undecidable manual PN 254 0.034 -0.92 0.4
--.MDI.Z. 1985-01-04T16:58:34.00 10.0 undecidable manual SN 102 0.0162 0.39 0.5
--.TCF.Z. 1985-01-04T16:58:33.40 10.0 undecidable manual PN 275 0.0308 -0.04 1.4
--.CTI.Z. 1985-01-04T16:58:30.50 10.0 undecidable manual PN 92 0.0279 1.6 0.1
--.BGF.Z. 1985-01-04T16:58:27.60 10.0 undecidable manual PN 280 0.027 -0.03 1.5
--.LMR.Z. 1985-01-04T16:58:26.00 10.0 undecidable manual PN 191 0.0257 0.39 1.2
--.LRG.Z. 1985-01-04T16:58:24.30 10.0 undecidable manual PN 193 0.0249 0.05 1.5
--.AVF.Z. 1985-01-04T16:58:23.50 10.0 undecidable manual PN 286 0.0243 0.08 1.5
--.SSF.Z. 1985-01-04T16:58:23.20 10.0 undecidable manual PN 292 0.024 0.18 1.4
--.LOR.Z. 1985-01-04T16:58:21.50 10.0 undecidable manual PN 298 0.0227 0.5 1.1
--.LBF.Z. 1985-01-04T16:58:18.80 10.0 undecidable manual PN 293 0.021 0.3 1.3
--.SMF.Z. 1985-01-04T16:58:18.50 10.0 undecidable manual PN 284 0.0211 -0.02 1.5
--.CDF.Z. 1985-01-04T16:58:16.90 10.0 undecidable manual PN 3 0.0202 -0.34 1.3
--.OSS.Z. 1985-01-04T16:58:16.10 10.0 undecidable manual PN 76 0.0189 0.8 0.6
--.HAU.Z. 1985-01-04T16:58:13.30 10.0 undecidable manual PN 345 0.0173 0.5 1.1
--.SAX.Z. 1985-01-04T16:58:12.10 10.0 undecidable manual PN 54 0.0166 0.47 1.1
--.MDI.Z. 1985-01-04T16:58:10.50 10.0 undecidable manual PN 102 0.0162 -0.55 1
--.SLE.Z. 1985-01-04T16:58:10.50 10.0 undecidable manual PN 30 0.0165 -1.08 0.3
--.BSF.Z. 1985-01-04T16:58:09.70 10.0 undecidable manual PN 352 0.0152 0.16 1.4
--.ZUL.Z. 1985-01-04T16:58:07.10 10.0 undecidable manual PN 33 0.014 -0.64 0.9
--.VDL.Z. 1985-01-04T16:58:07.00 10.0 undecidable manual PN 79 0.0145 -1.51 0.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
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